Filtering system.



PATBNTED JiJN e 1905;

'- V D. M. PFAUTZ. PILTERING SYSTEM. APPLIOATION FILED JULY 2. 1904.

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(thorn vei s PATENTED JUNE 6;, 1905.

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D. M. FAUTZ PILTBRIN G SYSTEM.

APPLICATION FILED JULY '2. 1904 4 SHEETS-SHBET 3- PATENIED JUNE 6, 1905.

D1 M. PFAUTZ.' FILTERING SYSTEM. APPLIQATION FILED JULY 2. 1904N6.791,647. PATENT ED'JUNEB, 1905.

1). M. PFAUTZV FILTERING SYSTEM.

.' APiLIdA-TION II ILED JULY 2, 1904.

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Y all nection it relates to the construction and ar-.

- UNITED STATES Patented June 6, 1905.

PATENT OFFICE.

FILTERIYIIVG S YSTEM.

SPECIFICATION forming part of Letters Patent No. 791,647, dated June 6,1905.

, Application filed July 2, 190.4. SerialNo. 215,066.

To all whom, it may concern:

Be it known thatI, DANIEL MJPFAUTZ, a

citizen of the United States, residing .at Germantown, .in the county ofPhiladelphia and State of Pennsylvania, have invented certain rangementof such afilter.

The nature and scope of my invention will be more fully understood fromthe following description, taken in connection with the accompanyingdrawings, forming part hereof, 4

in which Figure 1 1s a horizontal sectional view of a filteringapparatus embodying main features of my present invention. Fig. 2 is anenlarged vertical sectional view. Fig. 3 is an enlarged cross-sectionalview taken on the line 4 4: of Fig. 1. Fig. 4 is a top or plan view ofthe lid or closure for the filter-compartments and of the lockingmechanism therefor. Fig. 5 is an enlarged detail view of thelockinglevers of Fig. 4; and Fig. 6 is a top or plan view, on a smallerscale, of the filtering apparatus.

Referring to the drawings, or represents the main water-distributingpipe, leading from a reservoir or other source of supply. (Not shown.)This pipe a branches, as at a, and enters two Water-tight casings I) and6. These casings Z2 and b constitute, respectively, the inclosure forseparate filter apparatus, which, so far as arrangement and constructionare concerned, are duplicates. In a casing 12 or I) are arranged aseries of vertical filter-beds 0). Each bed 0Z consists of a box havingfront and rear faces of netting d and filled with filtering materialheld down in the box by a heavy plate W. The beds 0? are removable vertically from the casing and slide upon ribs 6 arranged on the sides of thecasing. (See Fig. 1.) The sides of the box forming the bed arechanneled, as at d to closely fit the ribs IF, and thus afford aliquid-tight joint between the casing and the sides of the bed at.

joint.

Each box constituting the receptacle for the filtering material isprovided with a lid (if, arranged to. be bolted or otherwise secureddown upon the casing and'to be removed therefrom. Any form or means forfastening this lid d down upon the casing and the filter-box may heused. The preferred form, however," is illustrated somewhat in detail inFigs. L and 5. This preferred form consists, essentially, of ascrew-bolt e, traversing the lid d and havingiaheaded lower end restingupon the under surface of the lid. The bolt passes -through a collar e,which may be turned upon the bolt e to advance or retract the collar. Onthe collar a loosely turns a sleeve 0 to which is pivoted a series oflocking-arms 6 These arms 6 pass through brackets a, projecting fromthe'top of the lid 0?, and through keeper-plates 6, connected with thecasing t or I). These arms are adapted when the sleeve 0 is turned bythe handle 0 in one direction to be projected outward to engage the saidkeeper-plates e. When turned in an opposite direction. the sleeve 0retracts the arms 6 and draws the same out of the keeper-plates 0 Whenthearms a are in the keeper-plates e and the col- 'lar is turned by itshandle 0 to be advanced 8 5 upon the bolt e toward the lid 01', then theinner ends of the arms'e are depressed and the outer ends raised againstthe keeper-plates e to force the lid cl down upon the box or bed 0? andonto the casing 7) or b by means of the brackets a, so as to render afilter-bed d Water-tight at its upper end and also to prevent the escapeof water between the casing b or 6 and the lid OZ, as clearlyillustrated in Fig. 20f thedrawings. i The beds cl are arrangedvertically in each of the filters B and B. If the valves B B 13*, and Barranged in the branch pipes a'- and a, are opened, the water comingfrom the main a must pass under pressure into a cham- I her f of each ofthe filters B and B, in front of the first bed and under pressurethrough said bed into a succeeding chamber f, in front of the second bed(Z, and so on untilthe chamber f in each filter is reached, from whichthe same by means of the branch pipes a flows into a pipe fordistribution. Thus in the instance shown where three filter-beds areused four chambers f are required, the first chamber being in front ofthe first bed and the last chamber f being to the rear of the last bedto constitute a reservoir for the purified water. The reservoir fcommunicates by the pipe a with the continuation e of the main or, asclearly illustrated in Figs. 1 and 6. The entire filtering apparatus ishence interposed directly in a main or water-distributing pipe and canbe cut into or out of the main,

as required, by means of thesystem of valves illustrated in Figs. 1 or6. Thus in Fig. 1 provision is'made for euttingeither of two adjacentfilters BB into or out of the main. In this instance if the lower filterB is to be cutout then a gate-valve B on the branch pipe at is shut anda similar valve B on the pipe a is closed. The water from the main athen passes only through the. filter B. If the filter B is to be cut outand thefilter B only is to be used, then the valves B B are opened andsimilar valves B B are closed. In Fig. 6, however, provision is alsomade for cutting both filters'B and B outof the main. In this instancethe main a is connected directly by a pipe at with its continuation aand upon the pipe (0 is arranged a valve a which is closed when eitheror both filters B and B are in operation and isropened when both of saidfilters B B are cut out of the main.

When the beds of either filter B or B are .to be cleansed, the filter iscut out, as before described, and the bed or bedsdremoved from theapparatus. When the filters B and B are to be flushed, then a system Dof drainagepipes from the bottom of the chambers f f" is opened and thevalve B or B on the branch pipe (6 is closed. In this instance the bedsd are removed from the casing prior to flushing. In front of each bed cland at the base of the screen d is arranged a tubular catch-pan g,having a slot or opening g at its top adjacent to the bottom of thescreen d. this tubular pan g is connected with the drainage-pipes D. Asimpurities gather on the screen cl they fall into the pan 9. To flushthese pans 9, water is diverted from a compartment or chamberf throughthe pan g and into the drainage-pipes D.

The weighted plates d on the filtering material in the boxes (Z permitof the increase or decrease in bulk of the material within the boxeswithout impairing the efficiency of the material. The plates 0Z alsoprevent the fil- One end of ter material from being agitated by passageof water under pressure through thematerial.

Having thus described the nature and object of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. In afiltering apparatus,acasing, a wedgeshaped rib at the bottom ofsaid casing, a filter-bed disposed in and removable from said casing andhaving its bottom indented to form a wedge-shaped groove adapted to fitthe rib at the bottom of said casing.

2. In a filtering apparatus, a casing, flat ribs arranged on either sideof the casing,a wedgeshaped rib arranged on the base of the casing, anda filter-bed having its sides and bottom indented complementally to theshape of the side and bottom ribs of the casing, said bed arrangedvertically in the casing and resting upon the bottom rib of said casing.

3. In a filtering apparatus, a casing interposed in a water-distributingpipe or main, a series of vertically-disposed filter-beds removablyarranged in said casing, means for forcing water under pressure throughsaid filterbeds, a tubular catch-pan arranged at the base of the frontface of each filter-bed, and means for flushing said catch-pans.

4. In a filtering apparatus, a filter-bed, a tubular catch-pan securedto thebase of the frontface of said bed, said pan having a pcripheralopening adjacent to the face of said bed and an open end, and adrainage-pipe con "nected with the open end of said catch-pan.

5. In a filtering apparatus, a casing interposed in awater-distributing.pipe or main, a series of vertically disposedfilter-beds removably arranged in said casing, each of said filter-bedshaving in its sides flat indentations and at its bottom a wedge-shapedindentation, flat and wedge-shaped ribs arranged respectively at thesides and bottom of said casing adapted to engage the indentations insaid filter-beds, and means for forcing water under pressure throughsaid filter-beds.

6. In a filtering apparatus, a casing interposed in a water-distributingpipe or main, a

ing witnesses.

DANIEL M. PFAUTZ. Witnesses:

- J. WALTER DOUGLASS,

THOMAS M. SMITH.

